CN201237833Y - Anti-myopia light alarm apparatus - Google Patents
Anti-myopia light alarm apparatus Download PDFInfo
- Publication number
- CN201237833Y CN201237833Y CNU2008201622914U CN200820162291U CN201237833Y CN 201237833 Y CN201237833 Y CN 201237833Y CN U2008201622914 U CNU2008201622914 U CN U2008201622914U CN 200820162291 U CN200820162291 U CN 200820162291U CN 201237833 Y CN201237833 Y CN 201237833Y
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- shell
- photoresistance
- triode
- luminophor
- electrically connected
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Abstract
The utility model relates to an anti-myopia alarm, which comprises a closed shell, and also comprises a power source, a photoresistor, a triode and a resistor which are arranged in the shell, and a mains switch and a luminous body which are arranged outside the shell, wherein, a loophole is arranged on the shell corresponding to the photoresistor for lighting of the photoresistor, and the power source, the main switch and the photoresistor are arranged in series; the base electrode of the triode is electrically connected with one end of the resistor, while the other end of the resistor is respectively electrically connected with the other end of the luminous body and the other end of the photoresistor; the emitting electrode of the triode is electrically connected with one end of the photoresistor, and the electric-collecting electrode of the triode is electrically connected with one end of the luminous body. Compared with the prior art, the utility model controls the work of the luminous body according to the intensity of the light sensed by the photoresistor, and is capable of reminding the user even when the light is too dim, thus protecting the vision of the user. Therefore the utility model has high practical value.
Description
Technical field
The utility model relates to a kind of alarm, especially relates to a kind of myopia prevention light alarm that all can remind the user under the dark situation of light.
Background technology
The power of light can directly influence visual effect in the school environment; if student or reading person are under the situation of insufficient light; learn always, read a book; in the course of time will affect one's power of vision; especially for young children; they can't judge that light is more weak, and need turn on light just can not affect one's power of vision, and this is very unfavorable to vision protection.Therefore, press for a kind of myopia prevention light alarm of the user's of prompting insufficient light, and also do not have this device in the market.
Summary of the invention
Technical problem to be solved in the utility model is that the present situation at prior art provides a kind of myopia prevention light alarm that can remind the user under the dark situation of light.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this myopia prevention light alarm, include shell, power supply in the enclosure is set and is exposed to the outer power switch of shell, luminophor, it is characterized in that: also be provided with a photoresistance in the described shell, triode and a resistance, this shell has light hole for photoresistance daylighting in the position of corresponding photoresistance, and, described power supply, power switch is in series with photoresistance and is connected, one end of the base stage of described triode and this resistance is electrically connected, the other end of this resistance respectively with the other end of luminophor, the other end of photoresistance is electrically connected, one end of the emitter of triode and photoresistance is electrically connected, and an end of the collector of triode and luminophor is electrically connected.
Described photoresistance is the photoreceptor that is commonly called as, under the brighter situation of its light that arrives in actual sensed, resistance is less, makes circuit be in conducting state, and under the darker situation of light that actual sensed arrives, it is infinitely great that resistance is tending towards, make circuit be in off state, therefore, it is applied in the myopia prevention light alarm of the present utility model, the work of control luminophor in order to the bright dark of induction light, thus reach the effect of reminding the user.
And can be provided with link on the described shell, and and described luminophor hangs from above under shell, like this, whole myopia prevention light alarm can be suspended on desk by link, read near the place zone or other users, makes things convenient for the user to check;
Described luminophor can be embedded among the transparent suspension member of various moulding, makes device have decoration function preferably;
For increasing other purposes of device, such as being used as pen container, at this moment, described shell can be made the shape that is pen container, power supply, power switch, photoresistance in the described shell is installed in the bottom of pen container shape shell, and described luminophor is arranged on the top of pen container shape shell, when device work, luminophor presents a circle ring of light in pen container shape cover top portion, as smart as a new pin.
Compared with prior art, advantage of the present utility model is: by photoresistance being applied in the myopia prevention light alarm, the light power that device is sensed according to photoresistance, and the work of control luminophor, under the dark situation of light, can remind the user, protection user's eyesight is very suitable for actual use; Simultaneously, myopia prevention light alarm of the present utility model can also have certain decoration function by the design of the transparent suspension member that luminophor was embedded, and cost is very low, is easy to apply.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the circuit diagram of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, this myopia prevention light alarm includes shell 1, is arranged on power supply 2, photoresistance 5, triode 7, the resistance 6 in the shell 1 and is exposed to shell 1 power switch 3, luminophor 4 outward;
Wherein, described shell 1 has light hole 11 for photoresistance 5 daylightings in the position of corresponding photoresistance 5, and shell 1 is provided with link 12;
Described luminophor 4 hangs from above under shell 1, and is embedded among transparent suspension member 8, and in the present embodiment, transparent suspension member 8 is the dragonfly moulding, and described luminophor 4 adopts the LED lamp;
One end of the base stage of described triode 7 and described resistance 6 is electrically connected, one end of the emitter of triode 7 and photoresistance 5 is electrically connected, one end of the collector of triode 7 and luminophor 4 is electrically connected, the other end of described resistance 6 respectively with the other end of luminophor 4, the other end of photoresistance 5 is electrically connected, constitute a detection module, and this detection module and power switch 3, power supply 2 series connection connect into the loop together, also be, three utmost points of triode 7 respectively with luminophor 4, resistance 6, photoresistance 5 links to each other, and luminophor 7, resistance 6, the other end of photoresistance 5 all is electrically connected, power switch 3, power supply 2 is with photoresistance 5 series connection, form the loop, concrete connecting circuit is referring to accompanying drawing 2.
Turn on the power switch 3, make device in running order, when under the darker situation of light; it is infinitely great that photoresistance 5 its impedances are tending towards, and electric current is from luminophor 4 processes, and luminophor obtains luminous; remind user's light darker; the effect of vision protection is played in the study of could reading a book of need turning on light, and the brighter situation of light I; photoresistance 5 its impedances are very little; electric current directly flows through from photoresistance 5, and luminophor 4 does not have electric current, does not work.
Claims (4)
1, a kind of myopia prevention light alarm, include shell, power supply in the enclosure is set and is exposed to the outer power switch of shell, luminophor, it is characterized in that: also be provided with a photoresistance in the described shell, triode and a resistance, this shell has light hole for photoresistance daylighting in the position of corresponding photoresistance, and, described power supply, power switch is in series with photoresistance and is connected, one end of the base stage of described triode and this resistance is electrically connected, the other end of this resistance respectively with the other end of luminophor, the other end of photoresistance is electrically connected, one end of the emitter of triode and photoresistance is electrically connected, and an end of the collector of triode and luminophor is electrically connected.
2, myopia prevention light alarm according to claim 1, it is characterized in that: described shell is provided with link, and described luminophor hangs from above under shell.
3, myopia prevention light alarm according to claim 2, it is characterized in that: described luminophor is embedded among transparent suspension member.
4, myopia prevention light alarm according to claim 1, it is characterized in that: described shell is the shape of pen container, power supply, power switch, photoresistance in the described shell is installed in the bottom of pen container shape shell, and described luminophor is arranged on the top of pen container shape shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201622914U CN201237833Y (en) | 2008-08-06 | 2008-08-06 | Anti-myopia light alarm apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201622914U CN201237833Y (en) | 2008-08-06 | 2008-08-06 | Anti-myopia light alarm apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237833Y true CN201237833Y (en) | 2009-05-13 |
Family
ID=40650568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201622914U Expired - Fee Related CN201237833Y (en) | 2008-08-06 | 2008-08-06 | Anti-myopia light alarm apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201237833Y (en) |
-
2008
- 2008-08-06 CN CNU2008201622914U patent/CN201237833Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20090907 |